And amos h



(No Model.)

' L V. V. LAWRENCE.

ROTARY PLANING MACHINE.

No. 406,587. Patented July 9, 1889.

WIT SSES: INVENTOR: a fi g W BY 7km ATTORNEYS.

UNITED STATES PATENT OFFICE.

VICTOR V. LAWRENCE, OF WATERFORD, VERMONT, ASSIGNOR OF ONE-HALF TO ISAAC F. PAUL, OF BOSTON, MASSACHUSETTS, AND AMOS H. CAR- PENTER, OF WEST \VATERFORD, VERMONT.

ROTARY PLANlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 406,587, dated July 9, 1889.

Application filed August 29, 1888. Serial No. 284,104. (No model.)

To all whom it may concern..- adj ustably secured to the bed 1 of the presser Be it known that I, VICTOR V. LAWRENCE, head by clamp-screws I, which pass through a citizen of the United States, residing at WVatransverse slots, and is also provided with terford, in the county of Caledonia and State set-screws 5, which are fitted to work in brack- 5 of Vermont, have invented certain new and ets6on said head 1,theirpointsbearing against useful Improvements in Rotary Planing-Mathe back of the cutter 2, so that by loosening chines; and I do hereby declare that the folthe clamp-screws 4 and rotating the said set-- lowing is a full, clear, and exact description screwsothe cuttermay be adjusted as required of the same. for taking a thin or thick shaving.

IO My invention relates to animproved presser- In addition to the ordinary free action of bar attachment for a rotary cutter-head, as the presser-bar, it also serves as a guard to hereinafter pointed out. catch chips and shavings and turn them back In the accompanying drawings, Figurel is a to a point where they may be conveniently sectional elevation of my improved presser-bar withdrawn from the bed of the machine by a 15 arranged in working position with an ordinary blower or exhaust-fan in the usual manner. 6 5 cutter-head. Fig. 2 is an end elevation of the The presser-bar A is hinged on the journals presser-bar, together with' a hollow cutter- 7 of the cutter-head B to enable its cutter 2 head, of my invention. Fig. 8 is a vertical to rise and fall and thus pass over knots or cross-section of the parts shown in Fig. 2. inequalities in the board 0. The means for 20 Fig. 4 is a detail view showing the inner side thus hinging the presser-bar are horizontal of the presser-bar. Fig. 5 is a vertical crossarms 8, having their outer or free ends prosection of a modification of my presser-bar, vided with lengthwise slots and their inner together with a modification of the cutterends curved corresponding to the journalhead shown in Figs. 2 and 3. boxes of the cutter-head B, to which they are 2 5 The presser or presser-bar A has substansecured by detachable semicircular pieces 9. 7 5 tially the form of a segment of a hollow cyl- The arms 7 are thus free to rotate on the cutinder of greater diameter and length than ter-head journals as centers. The presserthe rotary cutter-head B. It is arranged with bar is, attached to these arms by clamp-screws its concave side close to the front side of said 10, which pass through the slots in the arms.

0 cutter-head, so that at each rotation a por- By this construction andcombination of parts tion of the latter projects into and sweeps the presser-bar may be adjusted toward or through the'cavity of the presser-bar, as shown from the cutter-head as required. by dotted lines in Figs. 1 and 3. Thelowei' I sometimes curve the plate 2 downward side 1 of the presser-bar A is beveled or into enable it to pass under the cutter-head 3 5 clined to form a bed or seat on which a rigid more readily, and bevel it on its upper in- 'cutter 2 rests. The latter is a flat plate, made stead of its lower side at its cutting-edge, as preferably coequalin length with the pressershown in Fig. 5. In such case holes 11 are bar head 1. The beveled portion of its edge provided in the presser-bar to allow insertion bears on the top of the board 0 in close proxof a screw-driver for adjusting the set-screws 4o imity to the point or line where the cutting- 5. The outerends ofthe arms 8 may also be edges of the knives 3 of the cutter-head B arranged inside the ends of the presser-bar, leave the surface of said board. The edge of as shown in said Fig. 5. the cutter 2 coacts with the cutting-edges of The hollow or slotted cutter-head shown in the knives 3 of the cutter-head B to sever the the drawings forms the subject of an appli 5 chips or shavings as they are raised from the cation for patent filed by me March 26, 1888, 5

' board by said knives, thus preventing the Serial No. 268,488.

latter, to a large extent, from stripping or tear- What I claim ising the chips or shavings from the board, so 1. The combination, with the rotary cutterthat its planed surface is left smoother than head, of arms 8, which are journaled on the 50 would otherwise be the case. The cutter 2 is same axis and provided with slots, the presser- 10o bar having an inclined cutter-seat l on its lower side, clamp-screws 10, which secure the cutter to said arms in any adjustment permitted by the slots, and the cutter 2, attached to the inclined seat 1, and screws forsecuring and adjusting said cutter, as shown and described. V

2. The combination, with the rotary cutterhead, of horizontal arms which are journaled on the same axis and provided With slots, the presser-bar, and clamp-screws Which secure the latter to said arms in any adjustment perlnitted by the said slots, as specified and described.

3.- The combination, with the rotary cutter- I head, of a resser-bar which is journaled on the same axis and is adjustable toward and from the cutter-head, as specified and described.

VICTOR V. LAWRENCE.

Vitnesses:

HARRY L. I-IEALD, H. CARPENTER. 

